Beverage cooling apparatus



July 11, 1933. A. c. DENSLOW 1,917,927

BEVERAGE COOLING APPARATUS Filed Feb. 1, 1929 anvemtoz W 6. 49W 351;; A Sum/14% Patented July 11, 1933 .uNi'rEo s'raras rFIcE ALBERT c. DENSLOW, or new YonK, n. Y, srernn rsnnnn SHIPBUILD- ING CO., OF STATEN ISLAHD, NEW 1 033131,

Ii. CGEPGB.

savanna}; cousins arse-mares Application filed February' 1, 1929. Serial No. 338,748.

This application is a continuation in part ofmy application for refrigeration means and methods, Serial No. 327,809, filed December 22nd, 1928. lhe present improvements relates, in general, to refrigeration and more particularly to adevice for chilling or cooling beverages.

A primary object, among others, of the present improvements is to provide a novel beverage cooler of the type wherein the liquid to be cooled is supplied from replaceable bottles, caslis or demijohns which are inverted and partially inserted in the cooler housing. A further object is to provide a novel unit of beverage may be tapped in an unchilled or chilled state, in combination with automatic means for accomplishing the cooling function. A still further object is to provide a novel cooler, of the replaceable bottle type, wherein the cooling of the drinking water is accomplished without the employment of cumbersome refrigerating coils, and wherein the refrigerating surface and beverage conduit are mutually exposed to a heat transfer medium, such as water. 7

Another object of the present improvements is to provide a novel chilling chamber or receptacle including a novel arrangement of the beverage conduit and refrigerating surface. I The provision of an automatic refrigerating unit adapted to be incorporated in existing bottle coolers of the type described, to p and within same, a beveragecondu1t8 1s.

supplant the unsanitary and inconvenient crackedice normally employed therein, constitutes a further object of the improvements.

A still further object is to provide a novel beverage cooler peculiarly adapted for interstate shipment wherein means are provided for automatically draining the refrigerating system into a reservoir which latter is removable and replaceable at will.

The novel provision of a restricted inletin the expansion chamber in combination with a regulator in advance thereof whereby the eiiiciency ofthe circulating medium employed in the refrigerating: cycle is increased, con-' stitutes a further object of the improvements. u Further ob ects mcludethe provision of a skii the aforementioned character wherein the ri-rplac eable reservoir forthe'circulating medium, a novel'cxpansion chamber peculiarly adapted for use in beverage coolers, and others. i

In. general, the present improvements are de mod to improve"and increase the" iiic emy of this typeof cooler as a whole nd to provide a device that is light, portable, u-dy and durable as well as automatic in .:s operation.-' v i improvements will be apparent to those led theai't upon reference to the accomspeciiication and drawing, in which:

r: I Fig. 1 1S?! side view of a'beverage cooler embodying the present 1mp'rovements,'s'ome parts n section, others in elevation and others hrol': i away for convenience inil'lustration; Fig. 2 is an enlargedv ew ofthe'floatcon,-

trol led rrgulator;'

Fig.3 is anenlarged side-view of thereplareablc reservoir.

lrou or unw Yon-K ice Ether objects and advantages of the present Referring to, the drawing, theglass' bottle receptacle 5 is of the usual type, being normally filled with drinkingwater or other As illustratechthe receptacle 5 is inverter-L and suitably supported on the cooler cabinet or housing 6, with a portion thereof protruding into/said housing. *The upper portion of the housing 6 defines a cooling chamber or receptacle 7 and is designed to retain anliquid, such as water-for the purpose hercinafterset forth.

Adjacent the periphery'ofisaid receptacle wall of the housing and terminates in faucet 10, whereby water from the. bottle 5 may be tapped directly Without being. cooled or chi led. As. illustrated, the condiut 8 term nates in a faucct'll, adjacent the afore'men tioncd vtaucet 10 That section of the conduit which is intermediate faucet 11 and conduit section 8 is exposed throughout the major extent thereoito the cooling opera-..

frigerating unit. This surface is defined by' the expansion chamber of the unitin the form of'a dome 12 of the type set forth in my aforementioned copending application. This dome is preferably of circular cross section and is provided at its base with an annular flange whereby, in conjunction with suitable packing, insulation, etc., said dome is secured in liquid tight relation with the base of receptacle 7. In the normal operation. of the device, a heat transfer medium, such as water, is placed in chamber 7 substantially to the level indicated, whereby the dome 12 and coiled conduit 8 are submerged therein, both the dome and a substantial por tion of conduit 8 being thereby mutually exposed to the same water bath.

As illustrated, the refrigerating unit is housedin the lower portion of cabinet 6 and comprises a: compressor 13 having its pressurev or discharge side communicating with condenser 14 by conduit 15, the latter in turn communicating with reservoir 16 by pipe 17.

-Anoutlet from said reservoir is provided by conduit 18, leading from adjacent the bottom thereof to the float regulator 19, whence a conduit 20 leads to expansion chamber 12,'in

which it terminates in the restricted orifice 21. Communication between the interior of dome 12 and the suction side of compressor 13 is provided by conduit 22 having check valve 23 therein.

The motor 24, for driving compressor 13, is supplied with electrical energy by wire 25 leading from a wall socket or other convenient terminal (not shown) to -motor 24; and thence to thermostat 26 disposed in dome 12.

1 As described'in mycopending application,

the thermostat 26 makes or breaks the circuit I to motor 24 in response to thermal conditions n and surrounding dome 12, whereby the operation of the unit is entirely automatic.

The refrigerating medium employed for circulation, in the system described, preferably comprises a lubricating oil and methyl.

chloride, the functions and advantages of whlch are more fully set forth in said copending application. The cycle includes the compression of the chloride with the oil, in

compressor 13, condensation thereof in condenser lt, discharge into dome 12 Where vasor through reservoir 16, enters chamber 27 j from pipe 18, and as the level rises, the float 28 rises causing valve 31 to open, whence the liquid level may reced'e and valve 31. again close. v 7

Upon reference to my copen'ding application it will be seen that the orifice 21 serves as a liquid valve or regulator whereby the vaporizatirm of the chemical, as it enters and is diffused in the body of oil within dome 12, is regulated. However the regulator 19 controls the supply to-oritice 21 and it is notable that the novel combination of thesetWo regulators constitutes a refinement of construction fol-promoting greater efficiency in the device.

It has been found, that the use of regulator 19 and conduit 20, the latter being unrestricted and freely communicating with chamber, causes premature vaporization of the chemical with the attendant disadvantage of frosting of conduit 20 as well as loss of coolingefl ect in dome 12. Accordingly,the'provision of restricted orifice '21 in conjunction with regulator 19; prevents frosting 011 pipe 20, since vaporizationof the chemical is prevented in advance of said orifice. By choking the medium in pipe 20, as hereinafter described, the medium itself serves to keopthe walls of said )iae above frostin temaerature. Furthermore, orifice 21 prevents any cooling effect taking place in dome 12, from creeping back and bein experienced in pipe It is notable that the conduit 15, condenser 1-1 )1 )e 17, reservoir 16 conduit 18 and regl ulator 19 contain theoil and liquid chemical under pressure and therefore a constant supply is being i'uged, into chamber 27 of regulator 19, at all periods of operation. ,Assuming orifice 21 is omitted, under such conditions, float 28 would be up, needle valve 31 open. so that the suction in the low pressure side of the system, viz. conduit 20, chamber 12 and pipe 22, would be freely drawing the circulating n'iediuni around the system without obtaining GfllClQnt cooling results in chamber '12. A ':cordingly, the restrict-ed orifice 21 also serves as a choke for the system, as well as a regulator for reservoir 16, member 19 and dome 12.

As stated in-mv conendin a )lication,

the low pressure in pipe 22 and chamber 12, causes the body of oil 1n sald chamber to be the oil ways maintained in re expansion chamber 12 in a state of boiling or ebullition, so that the full eil'ect of the change or state of the hemical (accompanied by the taking up of heat) is experienced by the walls of the chamher. he orilice El this b iling" in the chamber by preventing and chemical from being drawn in too r pidly by the suction. At the i o c iol' st i=2 supply of this nr:

and prevents its too rapid egress t'r-om regulator that an excess of the medium is alyoir 'ill. This due to the tart that the compressor is constautly sup 'ilyiug tlieLmedium under prcssure to reservoir lb and regulator 18) at a faster rate than restricted oriiice will permit its discharge into dome 12. The orifice 21 is therefore responsible for certain esscn tials o1 the system such as insuring an excess of the medium in reservoir so that regulator i will always have a medium in chamber as well as maintaining the .boiling therein.

lletterring to Fig. 3, the conduits l7 and 18 are provided with valve controlled couplings and 33 in advance of their entry into res ervoir 16. Duringnormal operation, these valves are, of course, open so that'continw ous communication from coumrcssor 13 to is ai'lorded. ll hen it is desired to drain the oil and chemical from the system, valve 33 is closed and the motor driven compressor functions to pump the liquid from the system into reservoir 16. Suitable gauges may be provided for indicating when the major portion of the liquid ha; been drained so that valve 32 may then be closed and the reservoir 16 removed;

This regflnceablc feature is of importance due to the tact that a fresh charge of liqu d in a reservoir may be brought up and at tached without inconvenience,should the liquid in use become fouled. deteriorate or for other reasons need to be replenished. luspcctiou or the system as a whole is also greatly facilitated by the draining provision. 'l he rates on shipments in inter-state com n erce are known to be higher on merchandise including chemicals and in devices of the character in question, the chemical constitutes but a f'actional part of the total weight. Accordingly, a distinct saving results where the article may be shipped sepa rately from the chemical. ln the present instance, the removable reservoir permits the cooling cabinet, etc. to be forwarded for a materially lower rate, while the-reservoirs and chemicals therein may go forward separately under the rate determined forsuch materials. 1

Referring now to the cooling of the beverage in chamber 7, when the bottle 5 is placed in the illustrated position, the'liquid therein is conducted through and obtains in conduit eiieret'ore insures "l ioi her 4 cragein the latter. The chilled beverage may the operation of the system, which again- M generous sup 7 ply, ano insuring the proper quantity of the Q The latter is submerged in water in Cllfll'll: 7

her 7 as is also the expansion chamber 'or dome Y Assuming that'the temperature of the \vateris above the OPQIZIUVG temperature,

the thermostat closes the circuit-t0 the motor and the refrigerating system 'is automatic lly started. The expansion of the 7 .id chemical to avapor in chamber 12, is attended by theabstraction of heat from the chamber walls (12) ,water bath in chain-'- and coiled conduit 8 aswell as the bevthus be tapped from faucet 11.

li hen the temperature in chamber 12- and other elements inchamber ;7 have reached the predetermined low degree for which the thermostat is set, the current is automatically 7 shut oil and the system remains dormant un til the temperature rises suliiciently to incept occurs automatically. I i

The advantages of the present improvements will be apparent. The chilling is accomplished in an entirely automatic manner, requiring no human attention, such as ice replenishing. Furthermore, the beverage has no opportunity to become contaminated, since it is not emptied into a receptacle to be chilled where a portion of it may become stagnant, but is conducted directly from the bottle tothe faucet without the intermediacy of a storage or cooling vessel.

Other advantages and modifications of the present improvements will be apparent to 5 those skilled in the art, and it is understood that the invention is not limited to the details of construction herein set forth.

I claim: v 7

1.3111 a beverage cooler adapted to removably support inverted vesselscontaining liq-- uid to be chilled, the combination of a liquid receptacle partially filled with liquid, a conduit coiled adjacent the inner periphery thereof and terminating with an inlet adapted to receive the mouth o t an inverted vessel, said conduit having. a plurality of faucets communicating therewith at spaced points,'a

ago, said conduit having a section immersed in said liquid, said section having a faucet for discharging chilled beverage, and a cool- "ing instrumentality disposed in said receptacle and adapted to chill the beverage insaid conduit section through the liquid in said receptacle.

9 1. l 0. In a bevel age cooler, tne combination of a receptacle definlng a cooling chamber, a

cooling medium disposed in the lower portion of said chamber, a beverage passage extending through the upper portion of said cl1amher out of contact with said medium, a beverage passage extending through the lower portion of said chan'iber exposed to said medium, and faucets for saidpassages exterior to said chamber whereby chilled or unchilled beverage may be discharged therefrom.

4. In a beverage cooler, the combination of a receptacle defining 'a cooling chamber,

York.

ALBERT C. DEN SLOW. 

